Phnom Penh Weather and Climate: A Comprehensive Guide
Phnom Penh in Cambodia has a tropical moonson climate with a dry period from the end of November until the end of April. Rainy season starts in May and ends in November. Best time to visit this city temperature wise is in the European winter months from December until March.
Average maximum day and minimum night temperature
The climate in Phnom Penh remains fairly constant, offering very warm temperatures throughout the year. Average maximum daytime temperatures range from a very hot 37°C in April, the warmest time of the year, to a very warm 33°C during cooler months like January.
At night, temperatures typically drop to an average of around 23°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Phnom Penh is known for its substantial rainfall, with annual precipitation reaching 1415 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, September receives heavy rainfall, averaging 252 mm of precipitation, recorded across 19 rainy days. In contrast, the drier season, February brings less rainfall, with 12 mm over 2 rainy days. For more details, please visit our Phnom Penh Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Phnom Penh. While March receives considerable daily sunshine with up to 9.0 hours, September marks the darkest time of the year, where sunshine is scarce with only 4.3 hours of sunlight per day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Phnom Penh.
The city experiences its highest humidity in September, reaching 84%. In February, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 2 m/s and 3 m/s throughout the year. It is lowest in January, February, May, September and October and highest during March, April, June, July, August, November and December.
The mean monthly wind speed over the year (meters per second)
partly cloudy and small chance of rain partly cloudy and no rain partly cloudy and no rainForecast for Phnom Penh
6 m/s
7 m/s
7 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Phnom Penh in Cambodia
Other facts from our historical weather data:Most rainfall (rainy season) is seen in May, June, July, August, September and October.
Yes, the months of January and February are very dry.
April has an average maximum temperature of 37°C and is the hottest month of the year.
The coolest month is January with an average maximum temperature of 33°C.
September tops the wettest month list with 252 mm of rainfall.
February is the driest month with 12 mm of precipitation.
March is the sunniest month with an average of 270 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
